add test for new make_archive function

tests/unit/test_launcher_lib.py

@@ -0,0 +1,32 @@
+import pathlib
+import zipfile
+
+from rslp.launcher_lib import make_archive
+
+
+def test_make_archive(tmp_path: pathlib.Path):
+    # Make sure make_archive correctly ignores the passed prefixes.
+    # We make sure it works with exactly matching file as well as a subdirectory.
+    exclude_prefixes = [
+        "ignored_file",
+        "dir/ignored_subdir",
+    ]
+    root_dir = tmp_path / "root"
+    (root_dir / "dir" / "ignored_subdir").mkdir(parents=True, exist_ok=True)
+    (root_dir / "dir" / "okay_subdir").mkdir(parents=True, exist_ok=True)
+    (root_dir / "okay_file1").touch()
+    (root_dir / "ignored_file").touch()
+    (root_dir / "dir" / "okay_file2").touch()
+    (root_dir / "dir" / "ignored_subdir" / "also_ignored").touch()
+    (root_dir / "dir" / "okay_subdir" / "okay_file3").touch()
+
+    zip_fname = str(tmp_path / "archive.zip")
+
+    make_archive(zip_fname, str(root_dir), exclude_prefixes=exclude_prefixes)
+    with zipfile.ZipFile(zip_fname) as zipf:
+        members = zipf.namelist()
+
+    assert "okay_file1" in members
+    assert "dir/okay_file2" in members
+    assert "dir/okay_subdir/okay_file3" in members
+    assert len(members) == 3